How long can fish live?

Live fast, die young…OR live four centuries??!! The latest from The Fisheries Blog with artwork by Hannah Dean!

The Fisheries Blog

By Abigail Lynch

img_20160428_0002 Artwork by The Fisheries Blog Artist, Hannah Dean.

Fish are the most diverse group of vertebrates on earth – almost 28,000 species — more than half of all living vertebrate species.  So, perhaps, it isn’t surprising that fish have the record for both the shortest and longest vertebrate lifespan.  While a pet Goldfish (Carassius auratus) has a typical lifespan of 6-7 years, they have been reported to live as long as 30 years (Lorenzoni et al. 2007).  Still your average aquarium fish cannot compare to these short-lived and long-lived species!

Shortest-lived

The record for shortest recorded vertebrate lifespan goes to the Coral Reef Pygmy Goby (Eviota sigillata).  This little Indo-West Pacific reef fish, less than an inch long, has a lifetime which isn’t much longer.  It spends three weeks as larvae, quickly metamorphoses within one to two weeks, and settles…

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The 7 Wonderful Gar of the World

We had the privilege of writing a guest post on gars for the FINtastic Fisheries Blog; and check out the awesome GARtwork by Hannah Dean!

The Fisheries Blog

“As useless and destructive in our productive waters as wolves and foxes formerly were in our pastures and poultry yards”
~Forbes & Richardson, 1920

The 7 gar (Lepisostidae) species of the world. (Hannah Dean) The 7 gar (Lepisosteidae) species of the world. Find prints of this Gartwork at Hannah Dean‘s website.

“Overall, they look less like a fish than a medieval dart”
~Lawrence Payne, 2016
“They’re like an alligator with fins instead of legs”
~Solomon David, describing a gar to just about anyone.
With descriptions like these, is it any surprise that gars (Lepisosteidae) aren’t the most popular fishes “in the sea?” Did I mention they’re armored with enamel-like scales and have jaws full of sharp teeth…and they can breathe air? What’s not to like?
While basic gar morphology hasn’t changed much since the Cretaceous period, our perceptions of gars have started to evolve over the past few decades. These once-hated fish are garnering an improved…

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Ancient Fishes Symposium Schedule at American Fisheries Society!

Ancient Fishes Symposium

Here’s the schedule for the Ancient Fishes Symposium at the 2016 American Fisheries Society Annual Meeting in Kansas City! We will provide updates accordingly. For those of you not attending, you can follow the symposium on Twitter with the hashtag #AncientSportFish! We’ll follow up with recap posts in the future; if you have any questions, email solomonrdavid@gmail.com.

Monday, August 22, 2016

Conservation of Ancient Fishes, and that “Alligator Gar vs. Asian Carp” question…

MOD - Shedd NatGeo - ALG - SRD TWITTER

Alligator Gars (Atractosteus spatula) have been getting a lot of attention in the media recently, from headlines that they are “a weapon against Asian Carp” to the hunt for a single gator gar in small-town New York to “they’re not weapons against Asian Carp.”

We had the opportunity to provide insight and additional background information on the Illinois Alligator Gar Reintroduction, conservation of ancient fishes, and what current science suggests regarding Asian Carp control. Please read and share, more to come!

GAR WARS! Conserve Native Biodiversity! Join the discussion 7/8/2015 Noon EST

  
There’s been a lot of recent discussion regarding bowfin, gars, and other “rough fish” in the context of bowfishing (often wasteful harvest of native species), management (regulated harvest), and conservation. All three of these activities need not exist in conflict with each other (except wasteful harvest). We are raising awareness as to the value of these species in some cases, but there’s still much work to be done!

With conservation and managed harvest (including bowfishing) in mind, we are pleased to bring you the  “Gar Wars” Twitter chat via The Nature Conservancy! We invite ALL interested individuals, groups, etc to join the discussion on July 8, at noon EST.

http://www.nature.org/ourinitiatives/regions/northamerica/areas/greatlakes/explore/talknature-twitter-chat.xml

Please share with others who may be interested, and we hope to further raise awareness as to the conservation value of these oft-maligned ancient native species!

-COELACANTH: Genome Analysis & Insights from a Living Fossil

-COELACANTH! Great article on a recently published study on the coelacanth! The genome of this “living fossil” was recently sequenced and analyzed to investigate questions about the vertebrate water-land transition (adaptations from water-to-land) and comparative rates of genome evolution. The coelacanth was shown to have extremely slow rates of change in its genome, and comparative analysis of the lungfish showed that the lungfish is the closest ancestor of the tetrapods.–

LINKS:

PhysOrg Summary
http://phys.org/news/2013-04-coelacanth-genome-surfaces-unexpected-insights.html
Full journal article from Nature
http://www.nature.com/nature/journal/v496/n7445/pdf/nature12027.pdf